a senior administration official tells nbc news that both the president and vice president joe biden will take this message on the road in the days and weeks ahead. they are already doing it online with the #nowisthetime. kicking off the most ambitious federal campaign to crackdown on gun violence in decades, president obama on wednesday made this heartfelt promise. >> i will put everything i've got into this and so will joe. >> reporter: but some republicans are already signalling it will be an uphill battle for the president. >> not going to be easy. i know legislation is going to be introduced. we will look at it when that happens. >> reporter: florida senator marco rubio dismissed the president's plan. guns are not the problem, criminals with evil in their hearts and mentally ill people prone to violence are. what's included in the new package? a ban on military-style assault we will weapons, like the ones used last month in newtown and last sumner aurora, limits on high-cap pays the magazines that might have reused the number who have victims in both those cities and universal b